Lamp



FIG. 1 is a side elevational view of a lamp embodying my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a perspective view thereof.

FIG. 4 is a front elevational view thereof, the rear elevational view being the same.

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a lamp, as shown. 